WO2017109939A1

WO2017109939A1 - Composite cable and composite harness

Info

Publication number: WO2017109939A1
Application number: PCT/JP2015/086236
Authority: WO
Inventors: 良和早川; 知之村山; 江島　弘高; 岡　史人; 敬浩二ツ森
Original assignee: 日立金属株式会社
Priority date: 2015-12-25
Filing date: 2015-12-25
Publication date: 2017-06-29
Also published as: JP6886407B2; US20210210251A1; CN108431904B; JPWO2017109939A1; US11264148B2; CN108431904A

Abstract

[Problem] To provide a composite cable and a composite harness in which buckling tends not to occur, and movement of a tape member in the direction of cable length can be inhibited. [Solution] The invention is provided with a pair of first electric wires 5, a twisted pair wire 8 in which a pair of second electric wires 6 having a smaller outer diameter than that of the first electric wires 5 are twisted together, a tape member 3 wound into a spiral around an assembly 9 in which the first electric wires 5 and the twisted pair 8 are twisted together, and a sheath 4 covering the outer periphery of the tape member 3. The twisting direction of the assembly 9 and the winding direction of the tape member 3 are the same, the tape member 3 and the sheath 4 have an inwardly projecting part 10 formed in a spiral along the direction of cable length and formed so as to enter inward in the valley part between both first electric wires 5 or the valley part between the first electric wire 5 and the twisted pair wire 8, and the length by which the inward projecting part 10 projects inward from a common tangent that passes through the outer perimeter of the first electric wires 5 or the first electric wire 5 and the twisted pair wire 8 is at least 3% of the outer diameter of the first electric wires 5.

Description

Composite cable and composite harness

The present invention relates to a composite cable and a composite harness, and more particularly to a composite cable and a composite harness that connect a vehicle wheel side and a vehicle body side.

In recent years, electric braking devices have been used in vehicles such as automobiles.

Electromechanical brakes (Electro-Mechanical Brake, EMB) and electric parking brakes (Electric Parking Brake, EPB) are known as electric braking devices.

The electromechanical brake is also simply called an electric brake or an electric brake, and a dedicated electric motor provided on each wheel of the vehicle according to the amount of operation (stepping force or displacement) of the brake pedal by the driver. The brake driving force is controlled by the piston driven by the electric motor and the brake pad is pressed against the disc rotor of the wheel to generate a braking force according to the driver's intention.

In the electric parking brake, the driver operates a parking brake operation switch after the vehicle is stopped to drive a dedicated electric motor provided on each wheel of the vehicle, and a brake pad is driven by a piston driven by the electric motor. Is pressed against the disc rotor of the wheel to generate a braking force.

Further, in recent vehicles, sensors such as an ABS (Anti-lock Brake する System) sensor that detects the rotational speed of a running wheel, an air pressure sensor that detects tire air pressure, and a temperature sensor are mounted on the wheel. There are many cases.

Therefore, the signal line for the sensor mounted on the wheel and the signal line for controlling the electromechanical brake and the power line for supplying electric power to the electric motor for the electromechanical brake and the electric parking brake are used as a common sheath. The wheel side and the vehicle body side are connected using the accommodated composite cable. The composite cable in which the connector is integrally provided is called a composite harness.

In Patent Document 1, a composite including a plurality of power supply lines, a plurality of signal lines, a tape member that covers the plurality of power supply lines and the plurality of signal lines, and a sheath that covers the tape member. Cables have been proposed.

When a sheath is provided directly around the power line or signal line, it is necessary to apply a lubricant such as talc powder around the electric wire in order to make it easier to peel off the power line or signal line from the sheath. By providing a tape member around the signal line and the signal line, the power line and the signal line can be easily peeled from the sheath without applying a lubricant around the power line and the signal line. That is, according to the composite cable of Patent Document 1, it is possible to prevent the workability from being deteriorated due to the scattering of the lubricant to the surroundings during work such as terminal processing.

JP 2014-220043 JP

However, in the composite cable described in Patent Document 1, since a tape member is wound around a plurality of electric wires, a relatively large hollow is formed around each electric wire (between the electric wires or between the electric wire and the tape member). When the composite cable is bent or twisted, buckling is likely to occur.

Further, in the composite cable described in Patent Document 1, when the composite cable is repeatedly bent or twisted, the tape member may move in the cable longitudinal direction, and the tape member overlaps with a part of the composite cable. Various problems such as a decrease in flexibility may occur.

Therefore, an object of the present invention is to provide a composite cable and a composite harness that are less likely to buckle and can suppress movement of the tape member in the cable longitudinal direction.

For the purpose of solving the above-mentioned problems, the present invention provides a pair of first electric wires, a pair of second electric wires having an outer diameter smaller than that of the first electric wires, and a pair of twisted wires formed by twisting together. A tape member wound spirally around an assembly in which the first electric wire and the twisted pair are twisted together, and an outer skin coated on the outer periphery of the tape member; The twisting direction of the tape member and the winding direction of the tape member are the same direction, and the tape member and the outer skin are a valley portion between the first electric wires, or between the first electric wire and the twisted pair wire. It is formed so as to enter inward in at least one part of the valley portion, and has an inward protruding portion formed in a spiral shape along the cable longitudinal direction,
The inward protruding portion is formed on the outermost side among the first electric wires adjacent to each other in the circumferential direction across the inner protruding portion or a common tangent line passing through the outer periphery of the first electric wire and the twisted pair. A composite cable having a protruding length inward from the tangent line is 3% or more of the outer diameter of the first electric wire.

Moreover, this invention is equipped with the composite cable and the connector attached to at least any one edge part among the edge parts of the said 1st electric wire and the said 2nd electric wire in order to solve the said subject. Provide a composite harness.

According to the present invention, it is possible to provide a composite cable and a composite harness that are less likely to buckle and can suppress movement of the tape member in the cable longitudinal direction.

It is a block diagram which shows the structure of the vehicle using the composite cable which concerns on one embodiment of this invention. It is a cross-sectional view of a composite cable according to an embodiment of the present invention. It is the fractured sectional view showing the outer cover and tape member of the composite cable concerning one embodiment of the present invention in section. It is a schematic block diagram of the composite harness which concerns on one embodiment of this invention. It is a cross-sectional view of the composite cable which concerns on one modification of this invention.

[Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(Description of vehicle to which composite cable is applied)
FIG. 1 is a block diagram showing a configuration of a vehicle using a cable according to the present embodiment.

As shown in FIG. 1, the vehicle 100 includes an electric parking brake (hereinafter referred to as “EPB”) 101 as an electric braking device.

The EPB 101 includes an EPB electric motor 101a and an EPB control unit 101b.

The electric motor 101a for EPB is a wheel side device mounted on the wheel 102 of the vehicle 100. The EPB control unit 101 b is mounted on an ECU (electronic control unit) 103 that is a vehicle body side device of the vehicle 100. The EPB control unit 101b may be mounted on a control unit other than the ECU 103, or may be mounted on a dedicated hardware unit.

Although not shown, the EPB electric motor 101a is provided with a piston to which a brake pad is attached. By moving the piston by the rotational drive of the EPB electric motor 101a, the brake pad of the wheel 102 is moved. It is configured to generate a braking force by pressing against the disc rotor of the wheel. A pair of first electric wires 5 is connected to the EPB electric motor 101a as a power supply line for supplying a drive current to the EPB electric motor 101a.

When the parking brake operation switch 101c is operated from the off state to the on state when the vehicle 100 is stopped, the EPB control unit 101b outputs a drive current to the EPB electric motor 101a for a predetermined time (for example, 1 second). The brake pad is pressed against the disk rotor of the wheel 102 to generate a braking force on the wheel 102. Further, the EPB control unit 101b outputs a drive current to the EPB electric motor 101a when the parking brake operation switch 101c is operated from the on state to the off state or when the accelerator pedal is depressed. The pad is separated from the disk rotor of the wheel and is configured to release the braking force on the wheel 102. That is, the operation state of the EPB 101 is configured to be maintained after the parking brake operation switch 101c is turned on until the parking brake operation switch 101c is turned off or the accelerator pedal is depressed. The parking brake operation switch 101c may be a lever type or pedal type switch.

In addition, an ABS device 104 is mounted on the vehicle 100. The ABS device 104 includes an ABS sensor 104a and an ABS control unit 104b.

The ABS sensor 104 a is a rotational speed detection sensor that detects the rotational speed of the traveling wheel 102 and is mounted on the wheel 102. The ABS control unit 104b controls the braking device based on the output of the ABS sensor 104a so that the wheel 102 is not locked during a sudden stop, and controls the braking force of the wheel 102, and is mounted on the ECU 103. A pair of second electric wires 6 are connected to the ABS sensor 104a as signal lines.

The composite cable 1 according to the present embodiment is the one in which the first electric wire 5 and the second electric wire 6 are collectively covered with the outer skin 4 (see FIGS. 2A and 2B). The composite cable 1 extended from the wheel 102 side is connected to an electric wire group 107 in a relay box 106 provided on the vehicle body 105, and is connected to an ECU 103 and a battery (not shown) via the electric wire group 107. .

In FIG. 1, only one wheel 102 is shown for simplification of the drawing, but the EPB electric motor 101 a and the ABS sensor 104 a may be mounted on each wheel 102 of the vehicle 100, for example, The vehicle 100 may be mounted only on the front wheels or only on the rear wheels.

(Description of composite cable 1)
FIG. 2A is a cross-sectional view of the composite cable 1 according to the present embodiment, and FIG. 2B is a broken cross-sectional view showing the outer skin and the tape member in cross section.

As shown in FIGS. 2A and 2B, the composite cable 1 includes a pair of first electric wires 5 and a pair of twisted wires 8 formed by twisting a pair of second electric wires 6 having an outer diameter smaller than that of the first electric wires 5. The tape member 3 wound spirally around the assembly 9 in which the pair of first electric wires 5 and the twisted pair wires 8 are twisted together, and the outer skin 4 covered on the outer periphery of the tape member 3 It is equipped with.

In the present embodiment, the pair of first electric wires 5 includes a power line for supplying a driving current to the electric motor 101a for EPB 101 mounted on the wheel 102 of the vehicle 100. Moreover, in this Embodiment, a pair of 2nd electric wire 6 consists of a signal wire | line for the ABS sensor 104a mounted in the wheel 102. FIG.

The first electric wire 5 is configured by coating a first insulator 52 made of an insulating resin such as cross-linked polyethylene around a first conductor 51 obtained by twisting together highly conductive strands such as copper.

As a strand used for the first conductor 51, a wire having a diameter of 0.05 mm or more and 0.30 mm or less can be used. If a strand with a diameter of less than 0.05 mm is used, sufficient mechanical strength may not be obtained and the bending resistance may be reduced. If a strand with a diameter of greater than 0.30 mm is used, the composite cable 1 may be used. Flexibility may be reduced.

The outer diameter of the first conductor 51 of the first electric wire 5 and the thickness of the first insulator 52 may be appropriately set according to the required drive current. In the present embodiment, considering that the first electric wire 5 is a power supply line that supplies a drive current to the electric motor 101a for EPB 101, the outer diameter of the first conductor 51 is set to 1.5 mm or more and 3.0 mm or less. In addition, the outer diameter of the first electric wire 5 was set to 2.0 mm or greater and 4.0 mm or less.

The second electric wire 6 is an insulation formed by coating a second insulator 62 made of an insulating resin such as cross-linked polyethylene around a second conductor 61 formed by twisting highly conductive strands such as copper. It is an electric wire. As a wire used for the second conductor 61, a wire having a diameter of 0.05 mm or more and 0.30 mm or less can be used as in the case of the first conductor 51.

The outer diameter of the second electric wire 6 is smaller than the outer diameter of the first electric wire 5. In this Embodiment, in order to twist together the pair twisted wire 8 which twisted together the pair of (2) 2nd electric wires 6, and the pair of 1st electric wires 5, the viewpoint of making the outer diameter of the composite cable 1 approximate circular shape. Therefore, it can be said that it is desirable to use the second electric wire 6 having about half the outer diameter of the first electric wire 5. Specifically, as the second electric wire 6, one having an outer diameter of 1.0 mm to 1.8 mm and an outer diameter of the second conductor 61 of 0.4 mm to 1.0 mm can be used.

The twist pitch of the paired stranded wire 8 may be set to such an extent that an unnecessary load is not applied to the second electric wire 6 in consideration of the outer diameter of the second electric wire 6. Here, although the twist pitch of the twisted pair wire 8 is about 30 mm, the twist pitch of the twisted pair wire 8 is not limited to this. In addition, the twist pitch of the twisted pair wire 8 is an interval along the longitudinal direction of the twisted pair wire 8 at which the arbitrary second electric wire 6 is located at the same position in the circumferential direction of the twisted pair wire 8.

The assembly 9 is formed by twisting a pair of first electric wires 5 and a twisted pair wire 8 together. In the present embodiment, a pair of first electric wires 5 are brought into contact with each other, a pair of second electric wires 6 are brought into contact with each other, and the pair of first electric wires 5 and the second electric wires 6 (twisted wires 8) are brought into contact with each other. The assembly 9 was formed by contact. At this time, at least a part of the second electric wire 6 is disposed in an inner valley portion between the pair of first electric wires 5.

In EPB 101, basically, a drive current is supplied to electric motor 101a when the vehicle is stopped. On the other hand, the ABS sensor 104a is used when the vehicle is traveling, and the ABS sensor 104a is not used when the drive current is supplied to the first electric wire 5. Therefore, in the present embodiment, the shield conductor provided around the twisted pair wire 8 is omitted. By omitting the shield conductor, the outer diameter of the composite cable 1 can be reduced as compared with the case where the shield conductor is provided, and the number of parts can be reduced and the cost can be suppressed.

Although the case where the first electric wire 5 supplies a drive current to the EPB electric motor 101a is described here, the first electric wire 5 is, for example, an electromechanical brake (hereinafter referred to as EMB) provided on the wheel 102. May be used to supply drive current to an electric motor. In this case, since the current flows through the first electric wire 5 even while the vehicle 100 is traveling, in order to suppress malfunction of the ABS device 104 due to noise, the periphery of the paired wire 8 or a pair of the first electric wires 5 is used. It can be said that it is desirable to provide a shield conductor around the periphery. It is also possible to provide a shield conductor on the outer periphery side of each conductor of the pair of first electric wires 5 so that each of the pair of first electric wires 5 can be a shielded electric wire. It is also possible to provide a shield conductor on the outer peripheral side of each conductor to make each of the pair of second electric wires 6 a shield electric wire.

Furthermore, although the case where the second electric wire 6 is a signal line for the ABS sensor 104a is described here, the second electric wire 6 detects another sensor provided on the wheel 102, for example, a temperature sensor or tire air pressure. It may be a signal line used for an air pressure sensor or the like, a damper line used for controlling the vibration damping device of the vehicle 100, and a signal line (CAN cable or the like) for EMB control. May be. Even when the first electric wire 5 supplies a driving current to the EPB electric motor 101a, when the second electric wire 6 is used while the vehicle 100 is stopped, the malfunction due to noise is suppressed. In addition, it can be said that it is desirable to provide a shield conductor around the twisted pair wire 8.

The outer diameter of the assembly 9 in which the pair of first electric wires 5 and the twisted pair wires 8 are twisted is, for example, about 5 mm to 9 mm. The twist pitch of the aggregate 9 is preferably set to an extent that an unnecessary load is not applied to the first electric wire 5 and the twisted pair wire 8 in consideration of the outer diameter of the aggregate 9. Here, the twist pitch of the assembly 9 is about 50 mm, but the twist pitch of the assembly 9 is not limited to this. The twist pitch of the assembly 9 is an interval along the longitudinal direction of the assembly 9 where the arbitrary first electric wires 5 or the twisted pair wires 8 are at the same position in the circumferential direction of the assembly 9.

The tape member 3 is spirally wound around the assembly 9, and the tape member 3 includes all the electric wires (one pair of the first electric wires 5 and the pair of twisted wires 8 (one pair) constituting the assembly 9. In contact with the second electric wire 6)). The tape member 3 is interposed between the assembly 9 and the outer skin 4 and plays a role of reducing friction between the assembly 9 (the electric wires 5 and 6) and the outer skin 4 at the time of bending. 1 It plays the role which makes it easy to peel the electric wire 5 and the twisted pair wire 8. That is, by providing the tape member 3, the friction between the assembly 9 and the outer skin 4 is reduced without using a lubricant such as talc powder as in the prior art, and the stress applied to the

wires

5 and 6 during bending is reduced. As a result, the bending resistance can be improved and the workability at the time of terminal processing can be improved.

As the tape member 3, it is desirable to use a material that is slippery (having a small friction coefficient) with respect to the first insulator 52 of the first electric wire 5 and the second insulator 62 of the second electric wire 6. A material made of paper, paper, or resin (resin film or the like) can be used. More specifically, as the tape member 3, the friction coefficient (static coefficient of friction) between the tape member 3 and the first insulator 52 and the second insulator 62 is the same as that of the outer skin 4 and the first case when the tape member 3 is not provided. A member having a smaller coefficient of friction (static coefficient of friction) between the first insulator 52 and the second insulator 62 may be used.

In addition, as the tape member 3, one having a laminated structure of two or more layers can be used. In this case, the surface of the tape member 3 that is in contact with the aggregate 9 may be made of any one of a nonwoven fabric, paper, and a resin layer. For example, the tape member 3 may be configured such that a resin layer formed on one surface of paper is used and a resin layer having a smaller friction coefficient is wound around the aggregate 9 side.

In this embodiment, a tape member 3 made of a polyester-based nonwoven fabric having a thickness of 0.07 mm is used. The thickness of the nonwoven fabric used as the tape member 3 is desirably 0.03 mm or more and 0.10 mm or less. This is because when the thickness of the nonwoven fabric is less than 0.03 mm, a part of the outer skin 4 penetrates the tape member 3 and reaches the assembly 9 side when the outer skin 4 is coated, This is because the workability may be reduced, and when the thickness of the nonwoven fabric exceeds 0.10 mm, the rigidity of the tape member 3 is increased and the flexibility of the composite cable 1 may be reduced.

The tape member 3 is wound around the assembly 9 in a spiral shape so that a part of the width direction (a direction perpendicular to the longitudinal direction and the thickness direction of the tape member 3) overlaps. The width in which the tape member 3 overlaps is, for example, ¼ or more and ½ or less of the width of the tape member 3. In the present embodiment, the overlapping portion of the tape member 3 is not bonded with an adhesive or the like.

The width of the tape member 3 may be such that the tape member 3 does not wrinkle when the tape member 3 is wound, and the tape member 3 having a narrower width is used as the outer diameter of the entire assembly 9 becomes smaller. Is desirable. Specifically, when the outer diameter of the aggregate 9 is 5 mm to 9 mm, the width of the tape member 3 may be about 20 mm to 50 mm.

The winding pitch of the tape member 3, that is, the interval along the longitudinal direction where the tape member 3 is at the same position in the circumferential direction (for example, the interval between one end portions in the width direction) is adjusted by the width of the tape member 3 and the overlap width. Is possible. In addition, if the width of the tape member 3 is increased and the winding pitch is increased, the tape member 3 becomes close to a vertically attached state, and the flexibility of the composite cable 1 is lost and it is difficult to bend. Therefore, the winding pitch of the tape member 3 is desirably 50 mm or less.

The outer skin 4 is provided around the tape member 3. The outer skin 4 is made of, for example, urethane resin. In the present embodiment, the first electric wire 5 supplies a driving current to the EPB electric motor 101a, and the shield conductor is omitted because the time for which the driving current flows through the first electric wire 5 is relatively short. A shield conductor may be provided between the tape member 3 and the outer skin 4 or on the outer periphery of the outer skin 4 depending on the use of the first electric wire 5.

Now, in the composite cable 1 according to the present embodiment, the tape member 3 and the outer skin 4 are at least a valley portion between both the first electric wires 5 or a valley portion between the first electric wire 5 and the twisted pair wire 8. It is formed so as to enter inward at one place, and has an inward protruding portion 10 formed in a spiral shape along the cable longitudinal direction.

Here, the valley portion between the first electric wires 5, the valley portion between the first electric wire 5 and the twisted pair wire 8, and the valley between the other first electric wire 5 and the twisted pair wire 8. Although the case where the inward protrusion part 10 is formed in each of the portions is shown, the inward protrusion part 10 only needs to be formed in at least one of these valley portions. From the viewpoint of suppressing buckling of the composite cable 1 and suppressing movement of the tape member 3, it can be said that the inward protruding portions 10 are preferably formed in all the valley portions.

In the cable 1, both the first electric wires 5 and the tape member 3 are in contact with each other in the valley portion between the first electric wires 5 and the first electric wires 5, and the tape member 3 and the outer skin 4 are in contact with each other. . Moreover, in the cable 1, in the valley part between the 1st electric wire 5 and the twisted pair 8, the 1st electric wire 5 and the twisted pair 8 (at least one 2nd electric wire 6) and the tape member 3 contact. In addition, the tape member 3 and the outer skin 4 are in contact with each other.

The inward protruding portion 10 is the outermost (composite) of the common tangents that pass through the outer periphery of the first electric wires 5 adjacent to each other in the circumferential direction with the inner protruding portion 10 interposed therebetween or between the first electric wires 5 and the twisted pair wires 8. The cable 1 is formed so as to protrude inward from a tangent formed outwardly in the radial direction of the cable 1. Here, the common tangent is a tangent in a direction perpendicular to the longitudinal direction of the cable.

The common tangent line that passes through the outer periphery of the two first electric wires 5 exists on the inner peripheral side and the outer peripheral side of the composite cable 1, but the inward protruding portion 10 formed in the valley portion between both the first electric wires 5 is And formed so as to protrude inward from the common tangent on the outer peripheral side. In FIG. 2A, a common tangent line passing through the outer circumferences of the two first electric wires 5 is denoted by reference numeral 11.

Moreover, the outer periphery of the twisted pair wire 8 means the outer periphery of each of the two twisted second electric wires 6, and there are a plurality of common tangent lines passing through the outer periphery of the first electric wire 5 and the counter twisted wire 8. . The inward projecting portion 10 formed between the first electric wire 5 and the twisted pair wire 8 is a common tangent formed on the outermost peripheral side among the plurality of common tangents (through both the second electric wires 6 in a sectional view). It is formed so as to protrude inward from the tangent line). In FIG. 2A, the tangent formed on the outermost side (outer peripheral side) among the common tangents passing through the outer periphery of the first electric wire 5 and the paired stranded wire 8 on the left side of the drawing is denoted by reference numeral 12. In the following, for the sake of simplification of description, “common tangent” means a common tangent formed on the outermost side (outer peripheral side).

By forming the inward protruding portion 10, the hollow portion formed around the first electric wire 5 and the twisted pair wire 8 is reduced, and even when the composite cable 1 is bent or twisted, it buckles. Is less likely to occur. Further, the tape member 3 enters the valley portion between the first electric wires 5 adjacent in the circumferential direction or between the first electric wires 5 and the paired stranded wires 8, and the outer skin 4 restricts the movement outward in the radial direction. Since it is in a state, it becomes difficult for the tape member 3 to move in the cable longitudinal direction. That is, in the valley portion between the first electric wire 5 and the first electric wire 5 and in the valley portion between the first electric wire 5 and the twisted pair wire 8, the tape member 3 is covered with the outer skin 4 and the assembly 9 (first electric wire). 5 and the pair of twisted wires 8), and the relative movement of the tape member 3 in the cable longitudinal direction can be suppressed.

In the present embodiment, the inward protruding portion 10 is a common tangent line that passes through the outer circumferences of the first electric wires 5 adjacent to each other in the circumferential direction with the inner protruding portion 10 interposed therebetween or between the first electric wires 5 and the twisted pair wires 8. The inward projecting length d (the distance between the common tangent and the tip of the inward projecting portion 10) is 3% or more of the outer diameter of the first electric wire 5.

This is because if the protruding length d of the inward protruding portion 10 is as short as less than 3% of the outer diameter of the first electric wire 5, the effect of suppressing buckling and the effect of suppressing the movement of the tape member 3 may not be sufficiently obtained. Because there is. In order to sufficiently obtain the effect of suppressing buckling and the effect of suppressing the movement of the tape member 3, it is more preferable that the protruding length d of the inward protruding portion 10 is 10% or more of the outer diameter of the first electric wire 5.

For example, when the outer diameter of the first electric wire 5 is 3 mm, it can be said that the protrusion length d is preferably at least 0.1 mm or more. Although depending on the outer diameter of the

electric wires

5 and 6 to be used, in order to obtain the effect of having the inward protruding portion 10, the protruding length d is at least 0.1 mm or more, preferably 0.3 mm or more. This is desirable. Note that the protrusion length d does not always have to be constant, and some variation is allowed.

Furthermore, if the projecting length d of the inward projecting portion 10 is too large, the workability during terminal processing (for example, during strip work for removing the outer skin 4) may be reduced. It is desirable that the outer diameter of one electric wire 5 is 40% or less, preferably 35% or less. Although depending on the outer diameters of the

electric wires

5 and 6 to be used, it can be said that it is desirable that the protrusion length d is 1 mm or less from the viewpoint of easily removing the outer skin 4.

If the twisting direction of the assembly 9 and the winding direction of the tape member 3 are different, the tape member 3 is difficult to enter between the first electric wires 5 or the valley portion between the first electric wire 5 and the twisted pair wire 8. The twist direction and the winding direction of the tape member 3 are the same direction. Accordingly, when the tape member 3 is wound around the assembly 9, the tape member 3 is easily wound between the first electric wires 5 or between the first electric wires 5 and the twisted pair wires 8 by applying an appropriate tension. It becomes possible to get in. Thereafter, if the outer skin 4 is provided around the tape member 3 by extrusion coating, the inward projecting portion 10 is formed.

The twisting direction of the assembly 9 here means that the first electric wire 5 and the twisted pair wire 8 are proximal when the composite cable 1 is viewed from the distal end side (the side on which the tape member 3 overlaps). The direction of rotation from the side to the tip side. Further, the winding direction of the tape member 3 is a direction in which the tape member 3 rotates from the proximal end side to the distal end side when the composite cable 1 is viewed from the distal end side (side where the overlap of the tape member 3 is above). Say.

In addition, by making the twist direction of the assembly 9 and the winding direction of the tape member 3 the same direction, when the terminal member is processed, the twist of the assembly 9 is naturally loosened when the tape member 3 is unwound, It becomes easy to loosen the

electric wires

5 and 6. Thereby, the disassembly property of the composite cable 1 is improved, and the workability when performing terminal processing is improved.

In addition, by setting the twisting direction of the assembly 9 and the winding direction of the tape member 3 to be the same direction, when the composite cable 1 is twisted, the assembly 9 and the tape member 3 are opened and closed in synchronization. As a result, it is possible to suppress the application of an excessive load to a part of the composite cable 1 by distributing the load due to the twist, and to improve the durability against the twist.

In this regard, for example, when the twist direction of the assembly 9 and the winding direction of the tape member 3 are opposite to each other, when the composite cable 1 is twisted in the direction in which the assembly 9 opens (the diameter of the assembly 9 increases). Since the twisting direction of the assembly 9 and the winding direction of the tape member 3 are opposite directions, the tape member 3 is closed in reverse (the diameter of the tape member 3 is reduced). At this time, the tape 9 is restrained from opening the aggregate 9, stress is applied to the aggregate 9, and an excessive load is applied to a part of the pair of first electric wires 5 and the twisted pair 8. I will join. In the present embodiment, the assembly 9 and the tape member 3 are opened and closed synchronously by setting the twisting direction of the assembly 9 and the winding direction of the tape member 3 to be the same direction. It is possible to improve durability against twisting of 1.

If the twist pitch of the aggregate 9 is reduced, the composite cable 1 is easily bent and the flexibility is improved, but there is no allowance for twisting, and the durability against twisting is reduced. Conversely, when the twist pitch of the assembly 9 is increased, durability against twisting is improved, but flexibility is lowered. In this embodiment, when the twist is applied, the aggregate 9 and the tape member 3 can be opened and closed synchronously to disperse the load, so that the twist pitch of the aggregate 9 can be reduced and flexibility can be achieved. Even in the case of improving the above, it is possible to sufficiently ensure the durability against torsion.

Further, in order to more easily allow the tape member 3 to enter the valley portion between the first electric wires 5 or between the first electric wires 5 and the twisted pair wires 8, the twist pitch of the assembly 9 and the winding pitch of the tape member 3 are: It is desirable to be equal. Here, “the twist pitch of the assembly 9 and the winding pitch of the tape member 3 are equal” means that the twist pitch of the assembly 9 and the winding pitch of the tape member 3 are completely the same. Not limited to this, the twist pitch of the assembly 9 and the winding pitch of the tape member 3 are also slightly different (within ± 10%).

The inward protruding portion 10 is desirably formed over the entire length of the composite cable 1, but the inward protruding portion 10 may be interrupted in the middle. That is, in the composite cable 1, the inward protruding portion 10 may not be formed in a part of the longitudinal direction. For example, the inward projecting portion 10 is not formed (or the projecting length d of the inward projecting portion 10 is reduced by changing the winding pitch of the tape member 3 at the end portion of the composite cable 1 (predetermined distance from the end). Thus, it is possible to improve the workability at the time of terminal processing.

Moreover, in this Embodiment, both the tape member 3 and the outer skin | cover 4 protrude inward from the common tangent which passes along the outer periphery of the 1st electric wires 5 adjacent to the circumferential direction, or the 1st electric wire 5 and the twisted pair wire 8. However, the present invention is not limited to this. For example, when a relatively thick tape member 3 is used, only the tape member 3 may protrude inward from the common tangent line. However, it is necessary to form the outer skin 4 so that the outer skin 4 projects inwardly (in close contact with the outer peripheral surface of the tape member 3) in the inner projecting portion 10.

Further, the twist direction of the twisted pair wire 8 and the twist direction of the assembly 9 may be the same direction. The twist direction of the twisted pair wire 8 means that the second electric wire 6 is twisted from the base end side to the tip end side when the composite cable 1 is viewed from the tip end side (the side on which the tape member 3 overlaps). The direction rotating along the circumferential direction of the line 8 is said.

By making the twist direction of the twisted pair 8 and the twist direction of the assembly 9 the same direction, when twisting the assembly 9 during terminal processing, the twist of the twisted pair 8 is naturally unraveled. It becomes easy to loosen the

electric wires

5 and 6. Thereby, the disassembly property of the composite cable 1 is improved, and the workability when performing terminal processing is improved. Moreover, by twisting the two second electric wires 6 when twisting the assembly 9, the twisting direction of the twisted pair 8 and the twisting direction of the assembly 9 are the same. The twisted pair wire 8 and the first electric wire 5 are twisted in the direction along the bending bend. For this reason, when the composite cable 1 is bent, the pair of first electric wires 5 and the twisted pair wires 8 are synchronized to expand and contract in the longitudinal direction of the composite cable 1, so that the composite cable 1 is easily bent, and the composite cable 1 The flexibility of 1 can be improved.

Moreover, since the twist direction of the twisted pair 8, the twist direction of the assembly 9, and the winding direction of the tape member 3 are all the same direction, when the twist is applied to the composite cable 1, The body 9 and the tape member 3 are opened and closed in synchronism with each other, whereby the durability against twisting of the composite cable 1 can be further improved.

Furthermore, by setting the twist direction of the paired twisted wire 8 and the twisted direction of the assembly 9 to be the same direction, the assembly 9 is formed by twisting in the direction along the bending line of the paired twisted wire 8, When the outer cover 4 and the tape member 3 are simultaneously removed by a dedicated strip device or the like without unwinding the outer cover 4, the first electric wire 5 and the pair of twisted wires 8 are affected by the bending of the twisted pair 8. Are easily maintained in a twisted state. In the case of increasing the removal length of the outer skin 4 at the time of terminal processing, the strip operation is performed in a plurality of times, but by making the twist direction of the paired strands 8 and the twist direction of the assembly 9 the same direction, Even after the strip operation is performed, the first electric wire 5 and the twisted pair wire 8 are maintained in a twisted state, so that a plurality of strip operations can be easily performed.

In addition, when making the twist direction of the twisted pair 8 and the twist direction of the aggregate 9 the same direction, if the twist pitch of the twisted pair 8 and the twist pitch of the aggregate 9 are the same, the first electric wire 5 and the second The positional relationship of the electric wires 6 is always the same in the longitudinal direction, and the appearance of the composite cable 1 may be distorted. Therefore, it is desirable to make the twist pitch of the paired twisted wire 8 different from the twist pitch of the assembly 9 (specifically, make the difference between 10% and 80% or less (decrease) the twist pitch of the assembly 9). . If the twist pitch of the twisted pair wire 8 is larger than the twist pitch of the assembly 9, the twist pitch of the pair twisted wire 8 may fluctuate when twisting the assembly 9. It is desirable that the pitch is at least smaller than the twist pitch of the assembly 9.

Further, the twist direction of the twisted pair wire 8 and the twist direction of the assembly 9 may be different directions. By making the twist direction of the twisted pair wire 8 and the twist direction of the assembly 9 different from each other, the bent wire 8 of the twisted wire 8 and the bent wire of the assembly 9 are reversed to cancel each other. It is possible to suppress variations in bending characteristics in the cable longitudinal direction. Further, by changing the twist direction of the paired strands 8 and the twisting direction of the assembly 9, fluctuations in the twist pitch of the paired strands 8 when the assembly 9 is twisted together are suppressed, and the twisting of the paired strands 8 is performed. The assembly 9 can be formed while maintaining the pitch.

When the twist direction of the twisted pair 8 and the twist direction of the assembly 9 are different, if the twist pitch of the twisted pair 8 is large, the twist of the twisted pair 8 is loosened when the assembly 9 is twisted together. There is a risk of it. Therefore, in order to make the twist of the twisted pair 8 difficult to break and to stabilize the cross-sectional shape of the assembly 9, it is desirable that the twist pitch of the twisted pair 8 is at least smaller than the twist pitch of the assembly 9.

Whether the twisting direction of the twisted pair 8 and the twisting direction of the assembly 9 are the same or different is appropriately determined according to the properties such as workability at the time of terminal processing required for the composite cable 1 and the characteristics of the bending habit. It can be set. Moreover, the twist pitch of the pair twisted wire 8 should be smaller than the twist pitch of the assembly 9 regardless of whether the twist direction of the pair twisted wire 8 and the twist direction of the assembly 9 are the same direction or different directions. Is desirable.

(Description of composite harness using composite cable 1)
FIG. 3 is a schematic configuration diagram of the composite harness according to the present embodiment.

As shown in FIG. 3, the composite harness 20 includes a composite cable 1 according to the present embodiment, a connector attached to at least one of the end portions of the first electric wire 5 and the second electric wire 6. , And is configured.

3, the left side in the figure shows the end on the wheel 102 side, and the right side in the figure shows the end on the vehicle body 105 side (the relay box 106 side). In the following description, the end portion on the wheel 102 side of the composite harness 20 is referred to as “one end portion”, and the end portion on the vehicle body 105 side (relay box 106 side) is referred to as “other end portion”.

A wheel-side power connector 21a for connection with the EPB electric motor 101a is attached to one end of the pair of first electric wires 5, and a relay box 106 is attached to the other end of the pair of first electric wires 5. A vehicle body side power connector 21b for connection to the electric wire group 107 is attached.

An ABS sensor 104a is attached to one end of the pair of second electric wires 6 (paired stranded wire 8), and the other end of the pair of second electric wires 6 (paired stranded wire 8) is connected to the relay box 106. A vehicle body side ABS connector 22 for connection to the electric wire group 107 is attached.

In addition, although the case where the connector was separately provided in the 1st electric wire 5 and the 2nd electric wire 6 (pair twisted wire 8) was demonstrated here, it should be provided with the exclusive connector which connects both the

electric wires

5 and 6 collectively. It doesn't matter.

(Operation and effect of the embodiment)
As described above, in the composite cable 1 according to the present embodiment, the twisting direction of the aggregate 9 and the winding direction of the tape member 3 are the same direction, and the tape member 3 and the outer skin 4 are both the first electric wires 5. Is formed so as to enter inward in at least one portion of the valley portion between or between the first electric wire 5 and the twisted pair wire 8, and is formed in a spiral shape along the longitudinal direction of the cable. The inner protruding portion 10 has an inner protruding portion 10, and the inner protruding portion 10 passes through the outer circumferences of the first electric wires 5 adjacent to each other in the circumferential direction with the inner protruding portion 10 interposed therebetween or between the first electric wires 5 and the twisted pair wires 8. Of the common tangents, the projecting length d from the outermost tangent to the inside is 3% or more of the outer diameter of the first electric wire 5.

By having the inward protruding portion 10 that enters the valley portion between the first electric wires 5 or the valley portion between the first electric wire 5 and the twisted pair wire 8, In comparison, the hollow portion around the first electric wire 5 and the twisted pair wire 8 is made small, and even when the composite cable 1 is bent or twisted, it is possible to suppress the composite cable 1 from buckling. become.

Moreover, since the inward protrusion part 10 suppresses the movement of the tape member 3, it can suppress that the tape member 3 moves to a cable longitudinal direction, and the tape member 3 overlaps with a part of composite cable 1, and flexibility. It is possible to suppress problems such as lowering.

Furthermore, by setting the protruding length d of the inward protruding portion 10 to 3% or more of the outer diameter of the first electric wire 5, the buckling of the composite cable 1 and the movement of the tape member 3 can be more reliably suppressed. Become.

Furthermore, by setting the twisting direction of the assembly 9 and the winding direction of the tape member 3 to be the same direction, when the tape member 3 is wound, the tape member 3 is connected to the valley portion between the first electric wires 5, It becomes possible to easily enter the valley portion between the single electric wire 5 and the twisted pair wire 8, and the composite cable 1 having the inward protruding portion 10 can be easily manufactured.

(Modification)
Although the said embodiment demonstrated the case where the two 1st electric wires 5 and the twisted pair wire 8 were twisted together and the aggregate | assembly 9 was formed, like the composite cable 41 shown in FIG. A pair of linear interpositions (linear bodies, dummy wires) 42 disposed on both sides of the stranded wire 8 are provided, and the pair of first electric wires 5, the pair stranded wire 8, and the pair of interpositions 42 are twisted together. You may comprise so that the aggregate | assembly 9 may be formed.

By providing the pair of interpositions 42, the cross-sectional shape of the composite cable 41 can be made closer to a circular shape, the appearance can be improved, and problems such as the composite cable 41 being difficult to bend in a specific direction can be suppressed. . The interposition 42 is made of, for example, Teflon (registered trademark). The pair of interpositions 42 are formed to have the same outer diameter, and are disposed in contact with the first electric wire 5 and the twisted pair wire 8. The outer diameter of the interposition 42 is smaller than the outer diameter of the first electric wire 5.

When the interposition 42 is provided, the inward projecting portion 10 is formed in the valley portion between the interposition 42 and the first electric wire 5 adjacent to the interposition 42 or in the valley portion between the interposition 42 and the twisted pair wire 8. May be. In this case, the inward protruding portion 10 formed in the valley portion between the interposition 42 and the first electric wire 5 is formed so as to protrude inward from the common tangent line 43 passing through the outer periphery of the interposition 42 and the first electric wire 5. The inward projecting portion 10 formed in the valley portion between the interposition 42 and the twisted pair wire 8 is formed so as to project inward from the tangent line 44 passing through the outer periphery of the interposition 42 and the twisted pair wire 8.

In the above embodiment, the outer skin 4 has a single layer structure, but it may have two or more layers. By forming the outer skin 4 into two or more layers and performing extrusion coating a plurality of times, the cross-sectional shape of the composite cable 1 can be made closer to a circular shape and the appearance can be improved.

(Summary of embodiment)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals in the embodiment. However, the reference numerals and the like in the following description do not limit the constituent elements in the claims to members or the like specifically shown in the embodiment.

[1] A pair of twisted wires (8) formed by twisting together a pair of first wires (5) and a pair of second wires (6) having an outer diameter smaller than that of the first wires (5), and the pair of wires The tape member (3) wound around the assembly (9) in which the first electric wire (5) and the twisted pair wire (8) are twisted together, and the tape member (3) An outer skin (4) coated on the outer periphery of the assembly, the twist direction of the assembly (9) and the winding direction of the tape member (3) are the same direction, the tape member (3) and the The outer skin (4) is inwardly in at least one place in the valley between the first electric wires (5) or in the valley between the first electric wire (5) and the twisted pair wire (8). An inward projecting portion (10) formed in a spiral shape along the longitudinal direction of the cable, (10) is common through the outer circumferences of the first electric wires (5) adjacent to each other in the circumferential direction across the inward protruding portion (10) or between the first electric wires (5) and the twisted pair wires (8). A composite cable (1) having a protruding length inward from a tangential line formed on the outermost side of the tangent line is 3% or more of the outer diameter of the first electric wire (5).

[2] The composite cable (1) according to [1], wherein the protruding length of the inward protruding portion (10) is 0.1 mm or more.

[3] The inward protruding portion (10) is a valley portion between the first electric wires (5), and a valley portion between the first electric wire (5) and the twisted pair wire (8). And [1] or [2] formed in each of the valley portions between the other first electric wire (5) and the twisted pair wire (8).

[4] The composite cable (1) according to any one of [1] to [3], wherein the twist pitch of the aggregate (9) and the winding pitch of the tape member (3) are equal.

[5] The first electric wire (5) includes a power supply line for supplying a driving current to the electric motor (101a) for the electric parking brake (101) mounted on the wheel (102) of the vehicle (100). The composite cable (1) according to any one of [1] to [4].

[6] The composite cable according to any one of [1] to [5], wherein the second electric wire (6) includes a sensor signal line mounted on a wheel (102) of the vehicle (100). (1).

[7] A pair of linear interpositions (42) disposed on both sides of the twisted pair wire (8) in the circumferential direction, the pair of first electric wires (5) and the twisted pair wire (8) The composite cable (41) according to any one of [1] to [6], wherein the pair of interpositions (42) are twisted together to form the aggregate (9).

[8] A valley portion between the interposition (42) and the first electric wire (5) adjacent to the interposition (42), or between the interposition (42) and the twisted pair wire (8) The composite cable (41) according to [7], wherein the inward protrusion (10) is formed in a valley portion.

[9] The composite cable according to any one of [1] to [8], wherein the twist direction of the twisted pair wire (8) and the twist direction of the aggregate (9) are the same direction. ).

[10] The composite cable according to any one of [1] to [8], wherein the twist direction of the twisted pair wire (8) is different from the twist direction of the aggregate (9). ).

[11] At least a part of the second electric wire (6) is disposed in an inner valley portion between the pair of first electric wires (5), and the tape member (3) is formed of the assembly. The composite cable according to any one of [1] to [10], which is in contact with all the pair of first electric wires (5) and the pair of second electric wires (6) constituting (9). (1).

[12] At least one of the composite cable (1) according to any one of [1] to [11] and the end portions of the first electric wire (5) and the second electric wire (6) A composite harness (20) comprising a connector attached to the end.

As mentioned above, although embodiment of this invention was described, embodiment described above does not limit the invention which concerns on a claim. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

The present invention can be appropriately modified and implemented without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Composite cable 3 ... Tape member 4 Outer skin 5 ... 1st electric wire 6 ... 2nd electric wire 8 ... Twisted wire 9 ... Aggregate 10 ... Inward protrusion part

Claims

A pair of first electric wires;
A pair of twisted wires formed by twisting together a pair of second wires having an outer diameter smaller than that of the first wires;
A tape member spirally wound around an assembly in which the pair of first electric wires and the twisted pair are twisted together,
An outer skin coated on the outer periphery of the tape member,
The twist direction of the assembly and the winding direction of the tape member are the same direction,
The tape member and the outer skin are formed so as to enter inward at least one portion of a valley portion between the first electric wires or a valley portion between the first electric wire and the twisted pair wire. , Having an inward protrusion formed in a spiral shape along the longitudinal direction of the cable,
The inward protruding portion is formed on the outermost side among the first electric wires adjacent to each other in the circumferential direction across the inner protruding portion or a common tangent line passing through the outer periphery of the first electric wire and the twisted pair. The projecting length from the tangent to the inside is 3% or more of the outer diameter of the first electric wire,
Composite cable.
The protrusion length of the inward protrusion is 0.1 mm or more;
The composite cable according to claim 1.
The inward protruding portion includes a valley portion between the first electric wires, a valley portion between the first electric wire and the twisted wire, and the other first electric wire and the twisted wire. Formed in each of the valleys between,
The composite cable according to claim 1 or 2.
The twist pitch of the aggregate is equal to the winding pitch of the tape member,
The composite cable according to any one of claims 1 to 3.
The first electric wire comprises a power supply line for supplying a drive current to an electric motor for an electric parking brake mounted on a vehicle wheel.
The composite cable according to any one of claims 1 to 4.
The second electric wire includes a signal line for a sensor mounted on a vehicle wheel.
The composite cable according to any one of claims 1 to 5.
Comprising a pair of linear interpositions arranged on both sides of the twisted pair in the circumferential direction;
The assembly is formed by twisting the pair of first electric wires, the twisted pair wire, and the pair of interpositions,
The composite cable according to any one of claims 1 to 6.
The inward projecting portion is formed in a valley portion between the interposition and the first electric wire adjacent to the interposition, or a valley portion between the interposition and the paired twisted wire,
The composite cable according to claim 7.
The twist direction of the twisted pair wire and the twist direction of the aggregate are the same direction.
The composite cable according to any one of claims 1 to 8.
The twist direction of the twisted pair wire and the twist direction of the aggregate are different directions.
The composite cable according to any one of claims 1 to 8.
At least a part of the second electric wire is disposed in an inner valley portion between the pair of first electric wires,
The tape member is in contact with all the pair of first electric wires and the pair of second electric wires constituting the assembly,
The composite cable according to claim 1.
The composite cable according to any one of claims 1 to 11,
A connector attached to at least one of the ends of the first electric wire and the second electric wire;
Composite harness.